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Finding the Fourth Proportional to 2,888.50, 3,986.85 and 1,647.22

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Solution

The fourth proportional to 2,888.50, 3,986.85 and 1,647.22 is: 2,273.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.50 : 3,986.85 = 1,647.22 : x
  2. Step 2: Convert to fraction form
    2,888.50/3,986.85 = 1,647.22/x
  3. Step 3: Cross multiply
    2,888.50x = 3,986.85 × 1,647.22
  4. Step 4: Simplify right side
    2,888.50x = 6,567,219.06
  5. Step 5: Solve for x
    x = 6,567,219.06/2,888.50
  6. Step 6: Final answer
    x = 2,273.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.